ISA RP60.9 : 1981

1 Scope
2 Definitions
  2.1 Piping
  2.2 Field Piping
  2.3 Direct process piping
  2.4 Signal piping
  2.5 Air
  2.6 Pneumatic supply
  2.7 Signal air
3 General
  3.1 Application
  3.2 Reference standards or recommended practices
4 Pneumatic piping
  4.1 Pneumatic supply
  4.2 Signal piping
  4.3 Fittings
5 Direct process piping

Piping Guide for Control Centers, provides detailed recommendations for designing and installing pneumatic piping systems within control centers. This recommended practice focuses on the delivery and transmission of air signals used to operate instruments and convey process information. It covers key topics such as pneumatic supply pressures, pressure reducing stations with dual regulators and filters, regulated air headers, signal piping materials, color coding, routing practices, fittings and safety considerations for direct process piping entering control centers. It also references related standards for air quality, tubing nomenclature and labeling. This resource helps engineers and designers create organized, maintainable and reliable pneumatic piping systems tailored to the specific needs of control center environments.